The US Department of Agriculture estimates that 50 of Americ

The US Department of Agriculture estimates that 50% of American families cook dinner nightly. In a recent poll of 679 American families, 44.035% families said they cook dinner nightly. Use a 0.005 significance level to test the claim that the proportion of American families who cook dinner nightly is smaller than 50%. Claim: which corresponds to Opposite: which corresponds to The test is: left-tailed The test statistic is: z = (to 2 decimals) The Critical Value is: za/2 = (to 4 decimals) Based on this we: Reject the null hypothesis Conclusion: There does appear to be enough evidence to support the claim that the proportion of American families who cook dinner nightly is smaller than 50%.

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